US 12,249,259 B2
Rollable display device with extending arms and fixing bar
Youngsam Kim, Yongin-si (KR); Jin Hwan Choi, Seoul (KR); and Taewoong Kim, Seongnam-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Feb. 14, 2022, as Appl. No. 17/670,886.
Claims priority of application No. 10-2021-0019946 (KR), filed on Feb. 15, 2021.
Prior Publication US 2022/0262281 A1, Aug. 18, 2022
Int. Cl. G06F 1/16 (2006.01); G09F 9/30 (2006.01)
CPC G09F 9/301 (2013.01) 19 Claims
OG exemplary drawing
 
1. A display device comprising:
a display module;
a roller connected to a first end of the display module; and
a first arm and a second arm disposed on a rear surface of the display module, spaced apart from each other, and connected to a second end of the display module, the first end of the display module and the second end of the display module are opposite to each other in a first direction;
a fixing bar connected to the first arm, the second arm, and the second end of the display module, the fixing bar extending in a second direction intersecting the first direction,
a balance bar disposed between the first arm and the second arm, the balance bar extending in the second direction and configured to move in the first direction relative to the first end of the display module in response to the display module being rolled or unrolled; and
a balance post disposed between the balance bar and the fixing bar, the balance post extending in the first direction and connected to the balance bar and the fixing bar,
wherein each of the first arm and the second arm includes:
joint units coupled to each other and rotatable relative to each other; and
a torsion spring disposed in a portion of adjacent ones of the joint units, and
the balance bar connects to the first arm at a first rotational coupling portion of the first arm, connects to the second arm at a second rotational coupling portion of the second arm, and maintains a fixed distance between the first rotational coupling portion and the second rotational coupling portion.